I am looking at buying a house. The old owner of a house I like had a steam sauna and a hot tub (along with 4 kids). I called the power company and the High/avg/low for house (which has a HP and a wood stove) is $362/$240/$170. These are REALLY high for the area. The house was built in the mid 1990s and has a heat pump. I figure the hot tub was $30-$50/month

I am wondering about what you think it would cost a month for the sauna (since it is no longer in the house)? I know it could vary by a bit but I was wondering about ballpark figures.

This varies based on the electric company in use and their charge for kilowatts per hour so it is difficult to give you a ballpark for the month but in general a wet steam shower and a dry sauna take pennies to operate and are used on demand. They do not draw any electric when not in use. A hot tub takes a lot of electric since it runs all the time to keep the water at a certain temperature.